Publications
in press
Amoroso CA, Kappeler PM , Fichtel C, Nunn CL (in press) Temporal patterns of waterhole use as a predator avoidance strategy. Journal of Mammalogy.
Dore KM, Hansen MF, Klegarth AR, Fichtel C, Koch F, Springer A, Kappeler PM, Parga JA, Humle T, Colin C, Raballand E, Huang ZP, Qi XG, Di Fiore A, Link A, Stevenson PR, Stark DJ, Tan N, Gallagher CA, Anderson CJ, Campbell CJ, Kenyon M, Pebsworth P, Sprague D, Jones-Engel L, Fuentes A (im Druck) Review of GPS collar deployments and performance on nonhuman primates. Primates
Rudolph K, Fichtel C, Heistermann M, Kappeler PM (in press) Dynamics and determinants of glucocorticoid metabolite concentrations in wild Verreaux’s sifakas. Hormones & Behavior
2020
Defolie C, Merkling T, Fichtel C (2020) Patterns and variation in the mammal parasite–glucorticoid relationship. Biological Reviews 3: 349. 
Gogarten J F, Calvignac-Spencer S, Nunn C L, Ulrich M, Saiepour N, Nielsen H V, Deschner T, Fichtel C, Kappeler PM, Knauf S, Müller-Klein N, Ostner J, Robbins M M, Sangmaneedet S, Schülke O, Surbeck M, Wittig R M, Sliwa A, Strube C, Leendertz F H, Roos C, Noll A (2020) Metabarcoding of eukaryotic parasite communities describes diverse parasite assemblages spanning the primate phylogeny. Molecular Ecology Resources 142: 1095.
Sun L, Li J-H, Sueur C, Garber P A, Fichtel C, Kappeler PM (2020) Recent developments in primatology and their relevance to the study of tibetan macaques. In: Li J-H, Sun L und Kappeler P M (Hg.): The Behavioral Ecology of the Tibetan Macaque pp 3–16.
Wang X, Fichtel C, Li J-H (2020) Social relationships impact collective decision-making in Tibetan macaques. In: Li J-H, Sun L und Kappeler PM (Hg.): The Behavioral Ecology of the Tibetan Macaque pp 79–92.
Yi Y, Fichtel C, Kim E, Choe JC (2020) Impacts of Intergroup Interactions on Intragroup Behavioral Changes in Javan Gibbons (Hylobates moloch). International Journal of Primatology 283: 20161817.
to top2019
Altschul D M, Beran M J, Bohn M, Call J, DeTroy S, Duguid S J, Egelkamp C L, Fichtel C, Fischer J, Flessert M, Hanus D, Haun D B M, Haux L M, Hernandez-Aguilar R A, Herrmann E, Hopper L M, Joly M, Kano F, Keupp S, Melis A P, Motes Rodrigo A, Ross S R, Sánchez-Amaro A, Sato Y, Schmitt V, Schweinfurth M K, Seed A M, Taylor D, Völter C J, Warren E, Watzek J (2019) Establishing an infrastructure for collaboration in primate cognition research. PLoS ONE 14: e0223675.
Amoroso CR, Kappeler PM, Fichtel C, Nunn CL (2019) Fecal contamination, parasite risk, and waterhole use by wild animals in a dry deciduous forest. Behavioral Ecology and Sociobiology 73: 153
Buil JMM, Peckre LR, Dörge M, Fichtel C, Kappeler PM, Scherberger H (2019) Remotely releasable collar mechanism for medium-sized mammals: an affordable technology to avoid multiple captures. Wildlife Biology 2019 (1): wlb.00581.
Kappeler PM, Fichtel C (2019) Soziale Ungleichheit: Ein Paradebeispiel fu¨r interdisziplinäre anthropologische Forschung. In: Hartung G und Herrgen M (Hg.). Interdisziplinäre Anthropologie. Jahrbuch 7/2019: Soziale Ungleichheit pp 87–95.
Kappeler PM, Fichtel C (2019) Soziale Ungleichheit: Muster, Mechanismen und Konsequenzen in Primatengesellschaften. In: Hartung G und Herrgen M (Hg.). Interdisziplinäre Anthropologie. Jahrbuch 7/2019: Soziale Ungleichheit pp 3–31.
Kappeler PM, Fichtel C, van Schaik CP (2019) There Ought to Be Roots. In: Roughley N und Bayertz K (Hg.). Evolutionary Precursors of Social Norms and Conventions in Non-Human Primates: The normative animal? On the anthropological significance of social, moral, and linguistic norms pp 62–82.
Kappeler PM, Fichtel C, Vugt M, Smith JE (2019) Female leadership: A transdisciplinary perspective. Evolutionary Anthropology 28: 160–163.
Noonan MJ, Tucker MA, Fleming CH, Akre T, Alberts SC, Ali AH, Altmann J, Castro Antunes PC, Belant JL, Berens D, Beyer D, Blaum N, Böhning-Gaese K, Cullen Jr. L, Cunha de Paula R, Jasja Dekker J, Drescher-Lehman J, Farwig N, Fichtel C, Fischer C, Ford A, Goheen JR, Janssen R, Jeltsch F, Kauman M, Kappeler PM, Koch F, LaPoint S, Markham AC, Medici EP, Morato RG, Nathan R, Oliveira-Santos LGR, Patterson BD, Paviolo A, Ramalho EE, Roesner S, Selva N, Sergiel NA, Silva MX, Spiegel O, Ullmann W, Zieba F, Zwijacz-Kozica T, Fagan WF, Mueller T, Calabrese JM (2019) An analysis of autocorrelation and bias in home range estimation. Ecological Monographs 89: e01344.
Peckre LR, Kappeler PM, Fichtel C (2019) Clarifying and expanding the social complexity hypothesis for communicative complexity. Behavioral Ecology and Sociobiololgy 73: 11.
Rudolph K, Fichtel C, Schneider D, Heistermann M, Koch F, Daniel R, Kappeler PM (2019) One size fits all? Relationships among group size, health, and ecology indicate a lack of an optimal group size in a wild lemur population Behavioral Ecology and Sociobiology 73:132.
Sperber AL, Kappeler PM, Fichtel C (2019) Should I stay or should I go? Individual movement decisions during group departures in red-fronted lemurs. Royal Society Open Science 6: 180991.
2018
Anania A, Salmona J, Rasolondraibe E, Jan F, Chikhi L, Fichtel C, Kappeler PM, Rasoloarison R (2018) Taboo adherence and presence of Perrier’s sifaka (Propithecus perrieri) in Andrafiamena forest. Madagascar Conservation & Development 13: 6-14
Cauchoix M, Chow PKY, van Horik JO, Atance CM, Barbeau EJ, Barragan-Jason G, Bize P, Boussard A, Buechel SD, Cabirol A, Cauchard L, Claidière N, Dalesman S, Devaud JM, Didic M, Doligez B, Fagot J, Fichtel C, Henke-von der Malsburg J, Hermer E, Huber L, Huebner F, Kappeler PM, Klein S, Langbein J, Langley EJG, Lea SEG, Lihoreau M, Lovlie H, Matzel LD, Nakagawa S, Nawroth C, Oesterwind S, Sauce B, Smith EA, Sorato E, Tebbich S, Wallis LJ, Whiteside MA, Wilkinson A, Chaine AS, Morand-Ferron J (2018). The repeatability of cognitive performance: a meta-analysis. Philosophical Transactions of the Royal Society B: Biological Sciences 373: 20170281
Fichtel C, Schnoell AV, Kappeler PM (2018) Measuring social tolerance: An experimental approach in two lemurid primates. Ethology 124: 65-73.
Henke-von der Malsburg J, Fichtel C (2018) Are generalists more innovative than specialists? A comparison of innovative abilities in two wild sympatric mouse lemur species. Royal Society Open Science 5: 180480.
Huebner F, Fichtel C, Kappeler PM (2018) Linking cognition with fitness in a wild primate: Fitness correlates of problem-solving performance and spatial learning ability. Philosophical Transactions of the Royal Society B 373 doi:10.1098/rstb.2017.0295.
Kittler K, Kappeler PM, Fichtel C (2018) Instrumental problem-solving abilities in three lemur species. Journal of Comparative Psychology 132: 306-314.
Peckre L, Defolie C, Kappeler PM, Fichtel C (2018) Potential self-medication using millipede secretions in red-fronted lemurs: combining anointment and ingestion for a joint action against gastrointestinal parasites? Primates 59: 483-494.
Rakotonirina H, Kappeler PM, Fichtel C (2018) The role of facial pattern variation for species recognition in red-fronted lemurs (Eulemur rufifrons). BMC Evolutionary Biology 18:19.
Sehner S, Fichtel C, Kappeler PM (2018) Primate tails: Ancestral state reconstruction and determinants of interspecific variation in primate tail length. American Journal of Physical Anthropology 167: 750-759.
Tucker MA, Böhning-Gaese K, Fagan WF, Fryxell JM, Van Moorter B, Alberts SC, Ali AH, Allen AM, Attias N, Avgar T, Bartlam-Brooks H, Bayarbaatar B, Belant JL, Bertassoni A, Beyer D, Bidner L, van Beest FM, Blake S, Blaum N, Bracis C, Brown D, de Bruyn PJN, Cagnacci F, Calabrese JM, Camilo-Alves C, Chamaillé-Jammes S, Chiaradia A, Davidson SC, Dennis T, DeStefano S, Diefenbach D, Douglas-Hamilton I, Fennessy J, Fichtel C, Fiedler W, Fischer C, Fischhoff I, Fleming CH, Ford AT, Fritz SA, Gehr B, Goheen JR, Gurarie E, Hebblewhite M, Heurich M, Hewison AJM, Hof C, Hurme E, Isbell LA, Janssen R, Jeltsch F, Kaczensky P, Kane A, Kappeler PM, Kauffman M, Kays R, Kimuyu D, Koch F, Kranstauber B, LaPoint S, Leimgruber P, Linnell JDC, López-López P, Markham AC, Mattisson J, Medici EP, Mellone U, Merrill E, de MirandaMourão G, Morato RG, Morellet N, Morrison TA, Díaz-Muñoz SL, Mysterud A, Nandintsetseg D, Nathan R, Niamir A, Odden J, O’Hara RB, Oliveira-Santos LGR, Olson KA, Patterson BD, Cunha de Paula R, Pedrotti L, Reineking B, Rimmler M, Rogers TL, Rolandsen CM, Rosenberry CS, Rubenstein DI, Safi K, Saïd S, Sapir N, Sawyer N, Schmidt NM, Selva N, Sergiel A, Shiilegdamba E, Silva JP, Singh N, Solberg EJ, Spiegel O, Strand O, Sundaresan S, Ullmann W, Voigt U, Wall J, Wattles D, Wikelski M, Wilmers CC, Wilson JW, Wittemyer G, Zięba F, Zwijacz-Kozica T, Mueller T (2018) Moving in the Anthropocene: Global reductions in terrestrial mammalian movements. Science 359: 466–469.
2017
Kappeler PM, Cuozzo FP, Fichtel C, Ganzhorn JU, Gursky-Doyen S, Irwin MT, Ichino S, Lawler R, Nekaris KAI, Ramanamanjato J-P, Radespiel U, Sauther ML, Wright PC, Zimmermann E (2017) Long-term field studies of lemurs, lorises, and tarsiers. Journal of Mammalogy 98: 661–669.
Koch F, Ganzhorn JU, Rothman JM, Chapman CA, Fichtel C (2017) Sex and seasonal differences in diet and nutrient intake in Verreaux's sifakas (Propithecus verreauxi). American Journal of Primatology 79: e22595.
Rakotonirina H, Kappeler PM, Fichtel C (2017) Evolution of facial color pattern complexity in lemurs. Scientific Reports 7: 15181.
Rudolph K, Fichtel C (2017) Inhibitory control in douc langurs (Pygathrix nemaeus and P. cinerea). Vietnamese Journal of Primatology 2: 73-81.
Sperber AL, Werner LM, Kappeler PM, Fichtel C (2017) Grunt to go - Vocal coordination of group movements in redfronted lemurs. Ethology 123: 894-905.
Springer A, Fichtel C, Al-Ghalith GA, Koch F, Amato KR, Clayton JB, Knights D, Kappeler PM (2017) Patterns of seasonality and group membership characterize the gut microbiota in a longitudinal study of wild Verreaux's sifakas (Propithecus verreauxi). Ecology & Evolution 7: 5732-5745.
2016
Kappeler PM, Fichtel C (2016) The Evolution of Eulemur Social Organization. International Journal of Primatology 37: 10-28.
Koch F, Signer J, Kappeler PM, Fichtel C (2016) Intergroup encounters in Verreaux’s sifakas (Propithecus verreauxi): who fights and why? Behavioral Ecology and Sociobiology 70: 797-808.
Koch F, Signer J, Kappeler PM, Fichtel C (2016) The role of the residence-effect on the outcome of intergroup encounters in Verreaux's sifakas. Scientific reports 6: 28457
Rakotonirina H, Kappeler PM, Fichtel C (2016) The role of acoustic signals for species recognition in redfronted lemurs (Eulemur rufifrons). BMC Evolutionary Biology 16: 100.
Springer A, Mellmann A, Fichtel C, Kappeler PM (2016) Social structure and Escherichia coli sharing in a group‑living wild primate, Verreaux’s sifaka. BMC Ecology 16: 6.
2015
Hübner F, Fichtel C (2015) Innovation and behavioral flexibility in wild redfronted lemurs (Eulemur rufifrons) Animal Cognition 18: 777-787.
Kappeler PM, Fichtel C (2015) Eco-evo-devo of the lemur syndrome: did adaptive behavioral plasticity get canalized in a large primate radiation? Frontiers in Zoology 12(Suppl 1): S15.
Kittler K, Schnoell AV, Fichtel C (2015) Cognition in Ring-Tailed Lemurs. Folia Primatologica 86: 106–116.
Pechouskova E, Dammhahn M, Brameier M, Fichtel C, Kappeler PM, Huchard E (2015) MHC class II variation in a rare and ecological specialist mouse lemur reveals lower allelic richness and contrasting selection patterns compared to a generalist and widespread sympatric congener. Immunogenetics 67: 229-245.
Springer A, Fichtel C, Calvignac-Spencer S, Leendertz FH, Kappeler PM (2015): Hemoparasites in a wild primate: Infection patterns suggest interaction of Plasmodium and Babesia in a lemur species. International Journal for Parasitology: Parasites and Wildlife 4: 385–395.
Springer A, Razafimanantsoa L, Fichtel C, Kappeler PM (2015) Comparison of three short-term immobilization regimes in wild Verreaux's Sifakas (Propithecus verreauxi): Ketamin-Xylazine, Ketamine-Xylazine-Atropin, and Tiletamine-Zolazepam. Journal of Zoo and Wildlife Medicine 46: 482-490.
to top2014
Burkart JM, Allon O, Amici F, Fichtel C, Finkenwirth C, Heschl A, Huber J, Isler K, Kosonen ZK, Martins E, Meulman EJ, Richiger R, Rueth K, Spillmann B, Wiesendanger S & van Schaik CP (2014) The evolutionary origin of human hyper-cooperation. Nature Communications5:4747.
Fichtel C (2014) Acoustic differences in loud calls of Decken's and Crowned sifakas. Primate Conservation 28: 85-91.
Schnoell AV, Dittmann MT, Fichtel C (2014) Human-introduced long-term tradition in wild redfronted lemurs? Animal Cognition 17: 45-54.
Schnoell AV, Huebner F, Kappeler PM, Fichtel C (2014) Manual Lateralization in Wild Redfronted Lemurs (Eulemur rufifrons) During Spontaneous Actions and in an Experimental Task. American Journal of Physical Anthropology 153: 61-67.
Székely T, Liker A, Freckleton RP, Fichtel C, Kappeler PM (2014) Sex-biased survival predicts adult sex ratio variation in wild birds. Proceedings of the Royal Society B: Biological Sciences 281: 20140342
to top2013
Markolf M, Rakotonirina H, Fichtel C, von Grumbkow P, Brameier M, Kappeler PM (2013) True lemurs…true species - species delimitation using multiple data sources in the brown lemur complex. BMC Evolutionary Biology 13: 233.
Pyritz LW, Fichtel C, Huchard E, Kappeler PM (2013) Determinants and outcomes of decision-making, group coordination and social interactions during a foraging experiment in a wild primate. PLoS ONE 8: e53144.
Schaumburg F, Mugisha L, Kappeler PM, Fichtel C, Köck R, Köndgen S, Becker K, Boesch C, Peters G, Leendertz F (2013) Evaluation of NonInvasive Biological Samples to Monitor Staphylococcus aureus Coloniazation in Great Apes and Lemurs. PloS ONE B 10: e78046.
Schnoell AV, Fichtel C (2013) A novel feeding behaviour in wild redfronted lemurs (Eulemur rufifrons): depletion of spider nests. Primates 54: 371-375.
to top2012
Fichtel C (2012) Predation. In: Mitani JC, Call J, Kappeler PM, Palombit RA, Silk JB (eds) The Evolution of Primate Societies. University of Chicago Press, Chicago: 169-194.
Fichtel C, Hilgartner R (2012) Noises in the dark: vocal communication in nocturnal pair-living primates. In: Master J, Gamba M, Génin F (eds) Developments in Primatology. Leaping Ahead: Advances in Prosimian Biology. Springer, New York: 297-304.
Hilgartner R, Fichtel C, Kappeler PM, Zinner D (2012) Determinants of pair-living in red-tailed sportive lemurs (Lepilemur ruficaudatus). Ethology 118: 466-479.
Kappeler PM, Fichtel C (2012) Female reproductive competition in Eulemur rufifrons: eviction and reproductive restraint in a plurally breeding Malagasy primate. Molecular Ecology 21: 685-698.
Kappeler PM, Fichtel C (2012) A 15-year perspective on the social organization and life history of sifaka in Kirindy Forest. In: Kappeler PM, Watts DP (eds) Long-Term Field Studies of Primates. Springer, Heidelberg: 101-121.
Pflüger FJ, Fichtel C (2012) On the function of redfronted lemur's close calls. Animal Cognition 15: 823-831.
Schnoell AV, Fichtel C (2012) Wild redfronted lemurs (Eulemur rufifrons) use social information to learn new foraging techniques. Animal Cognition 15: 505-516.
Schnoell AV, Fichtel C (2012) Predation on redfronted lemurs (Eulemur rufifrons) by fossas (Cryptoprocta ferox). Lemur News 16: 30-32.
to top2011
Fichtel C, Kappeler PM (2011) Variation in the meaning of alarm calls in Verreaux´s and Coquerel´s sifakas (Propithecus verreauxi, P. coquereli). International Journal of Primatology 32: 346-361.
Fichtel C, Pyritz LW, Kappeler PM (2011) Coordination of group movements in non-human primates. In: Boos M, Kolbe M, Kappeler PM, Ellwart T (eds) Coordination in Human and Non-Human Primate Groups. Springer, Heidelberg: 37-56.
Fichtel C, Scheiner E, Maak B (2011) Über die Kommunikation bei nichtmenschlichen Primaten und die Evolution von Sprache. In: Dreesmann D, Graf D, Witte K (eds) Evolutionsbiologie: Moderne Themen für den Unterricht. Heidelberg: Spektrum Akademischer Verlag.
Fichtel C, Zucchini W, Hilgartner R (2011) Out of sight but not out of mind? Behavioral coordination in red-tailed sportive lemurs. International Journal of Primatology 32: 1383-1396.
Pyritz LW, Kappeler PM, Fichtel C (2011) Coordination of group movements in wild red-fronted lemurs: processes and influence of ecological and reproductive seasonality. International Journal of Primatology 32: 1325-1347.
Pyritz LW, King AJ, Sueur C, Fichtel C (2011) Reaching a consensus: terminology and concepts used in coordination and decision-making research. International Journal of Primatology 32: 1268-1278.
to top2010
Fichtel C, Kappeler PM (2010) Human universals and primate symplesiomorphies: establishing the lemur baseline. In: Kappeler PM, Silk JB (eds) Mind the Gap: Tracing the Origins of Human Universals. Springer, Heidelberg: 395-426.
Fichtel C, Manser MB (2010) Vocal communication in social groups. In: Kappeler PM (ed) Animal Behaviour: Evolution and mechanisms. Springer, Heidelberg: 29-54.
Pyritz LW, Fichtel C, Kappeler PM (2010) Conceptual and methodological issues in the comparative study of collective group movements. Behavioural Processes 84: 681-684.
Rahlfs M, Fichtel C (2010) Anti-predator behaviour in a nocturnal primate, the grey mouse lemur (Microcebus murinus). Ethology 116: 429-439.
to top2009
Barthold J, Fichtel C, Kappeler PM (2009) What is it going to be? Pattern and potential function of natal coat change in sexually dichromatic redfronted lemurs (Eulemur fulvus rufus). American Journal of Physical Anthropology 138: 1-10.
Dammhahn M, Schäffler L, Fichtel C, Kappeler PM (2009) Rapid lemur survey in northern Menabe. Lemur News 14: 13-16.
Eberle M, Fichtel C (2009) Sexuelle Selektion und die Evolution von Paarungssystemen bei Primaten einschließlich des Menschen. Praxis der Naturwissenschaften-Biologie in der Schule 3: 22-28.
Fichtel C (2009) Costs of alarm calling: lemur alarm calls attract fossas. Lemur News 14: 53-55.
Lührs M-L, Dammhahn M, Kappeler PM, Fichtel C (2009) Spatial memory in the grey mouse lemur (Microcebus murinus). Animal Cognition 12: 599-609.
to top2008
Benadi G, Fichtel C, Kappeler PM (2008) Intergroup relations and home range use in Verreaux’s sifaka (Propithecus verreauxi). American Journal of Primatology 70: 956-965.
Fichtel C (2008) Ontogeny of conspecific and heterospecific alarm call recognition in wild Verreaux’s sifakas (Propithecus v. verreauxi). American Journal of Primatology 70: 127-135.
Gros-Louis J, Perry S, Fichtel C, Wikberg E, Gilkenson H, Wofsy S, Fuentes A (2008) Vocal repertoire of white-faced capuchin monkeys (Cebus capucinus): acoustic structure, context and usage. International Journal of Primatology 29: 641-670.
to top2007
Fichtel C (2007) Avoiding predators at night: antipredator strategies in red-tailed sportive lemurs (Lepilemur ruficaudatus). American Journal of Primatology 69: 1-14.
Fichtel C, Kraus C, Ganswindt A, Heistermann M (2007) Influence of reproductive season and rank on fecal glucocorticoid levels in free-ranging male Verreaux's sifakas (Propithecus verreauxi). Hormones and Behavior 51: 640-648.
to top2006
Fichtel C, Kappeler PM (2006) Recent research activities of the German Primate Center (DPZ) in Kirindy Forest / CFPF, Morondava. In: Schwitzer C, Brandt S, Ramilijaona O, Razanahoera MR, Ackermand D, Razakamanana T, Ganzhorn JU (eds) Proceedings of the German-Malagasy Research Cooperation in Life and Earth Sciences. Concept-Verlag, Berlin: 127-134.
Fichtel C, van Schaik CP (2006) Semantic differences in sifaka (Propithecus verreauxi) alarm calls: a reflection of genetic or cultural variants? Ethology 112: 839-849.
to top2005
Fichtel C, Kappeler PM, Schwibbe M (eds) (2005) 1. Congress of the European Federation for Primatology (EFP) and 9. Tagung der Gesellschaft für Primatologie (GfP). Primate Report 72.
Fichtel C, Perry S, Gros-Louis J (2005) Alarm calls of white-faced capuchin monkeys: an acoustic analysis. Animal Behaviour 70: 165-176.
to top2004
Fichtel C (2004) Reciprocal recognition in sifaka (Propithecus verreauxi verreauxi) and redfronted lemur (Eulemur fulvus rufus) alarm calls. Animal Cognition 7: 45-52.
Trillmich J, Fichtel C, Kappeler PM (2004) Coordination of group movements in wild Verreaux's sifakas (Propithecus verreauxi verreauxi). Behaviour 141: 1103-1120.
to top2003
Fichtel C, Hammerschmidt K (2003) Responses of squirrel monkeys to their experimentally modified mobbing calls. The Journal of the Acoustical Society of America 113: 2927-2932.
Kappeler PM, Fichtel C, Schwibbe M (eds) (2003) 4. Göttinger Freilandtage: Cooperation in Primates and Humans - Mechanisms and Evolution. Primate Report 66-1.
to top2002
Fichtel C, Hammerschmidt K (2002) Responses of redfronted lemurs (Eulemur fulvus rufus) to experimentally modified alarm calls: evidence for urgency-based changes in call structure. Ethology 108: 763-777.
Fichtel C, Kappeler PM (2002) Anti-predator behavior of group-living Malagasy primates: mixed evidence for a referential alarm call system. Behavioral Ecology and Sociobiology 51: 262-275.
to top1999
Naguib M, Fichtel C, Todt D (1999) Nightingales respond more strongly to vocal leaders of simulated dyadic interactions. Proceedings of the Royal Society of London B 266: 537-542.
to top